title: Submucosal "dissection" in collagenous colitis.
mesh_terms: D000368:Aged; D003092:Colitis / Q000150:complications*; D003094:Collagen; D003106:Colon / Q000293:injuries*; D003113:Colonoscopy / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007413:Intestinal Mucosa / Q000293:injuries*; D008875:Middle Aged
chemical_list: D003094:Collagen